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About sponsors(Japanese)

created by

anonymous

41 seconds ago

​x
 
#include <stdio.h>
#include <string.h>
int *add(int a, int b){
    int ar[1];
    int result = a+b;
    memcpy(ar, &result, sizeof(int));
    return ar;
}
​
int main(){
    int a = add(1,2)[0];
    printf("%i\n",a);
}
​

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$ gcc prog.c -Wall -Wextra -std=gnu11

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Start

prog.c: In function 'add':
prog.c:7:12: warning: function returns address of local variable [-Wreturn-local-addr]
    7 |     return ar;
      |            ^~

Segmentation fault

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